Things have changed at Cambridge since the sixties re admission for royals etc. When I was there in the late 80s there was plenty of controversy about Prince Edward’s relatively low grades (though they were still better than Prince Charles IIRC). I also lived next to someone with the same surname as the building I was in, whose A-levels weren’t at the usual standard (though having said that he ended up as the CEO of a multi-billion dollar company). Nowadays I don’t think being raked over the coals in the press about their admissions criteria is something any UK college would want to repeat.